... sheet 3.Waterproof,soundproof,insulation 4.Density:8.10.12kg Eps sandwich panelAccording to core material kinds, the sandwich panel includes ... in Polyurethane(PU), polystyrene(EPS) and rock wool or glass wool sandwich panel, the up ... bottom layer: Uses many kinds of metal sheets B) Middle: EPS board, PU board, rock wool 2) Width: 950mm, 1000mm, 1150mm ...